@misc{indiciaed8992e4908e3,
  title = {Statistics at square one. XIX--Correlation (continued).},
  author = {T D Swinscow},
  year = {1976},
  doi = {10.1136/bmj.2.6038.747},
  url = {https://pubmed.ncbi.nlm.nih.gov/974582/},
  note = {Source identifier: 974582}
}